Home / 85,211,999.20-127,817,998.80-51,115,794.40

Finding the Fourth Proportional to 85,211,999.20, 127,817,998.80 and 51,115,794.40

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Solution

The fourth proportional to 85,211,999.20, 127,817,998.80 and 51,115,794.40 is: 76,673,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,999.20 : 127,817,998.80 = 51,115,794.40 : x
  2. Step 2: Convert to fraction form
    85,211,999.20/127,817,998.80 = 51,115,794.40/x
  3. Step 3: Cross multiply
    85,211,999.20x = 127,817,998.80 × 51,115,794.40
  4. Step 4: Simplify right side
    85,211,999.20x = 6,533,518,547,280,246
  5. Step 5: Solve for x
    x = 6,533,518,547,280,246/85,211,999.20
  6. Step 6: Final answer
    x = 76,673,691.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.